I Thought Building the Product Was the Hard Part. I Was Wrong.
Lessons learned from building and launching VatGiaTop, a platform for construction material pricing.
Daily Edition Thursday, June 11, 2026 khanhdang.name
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EST.
2020
2020
ERIC KHÁNH Senior Fullstack Engineer
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SỐ
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★ Breaking News ★
Senior Fullstack Engineer with 5+ YOE — ready for the next challenge
Senior Fullstack Engineer with 5+ years building and shipping production software end-to-end. Experienced in platform modernization, microservice architectures, quality engineering, and DevOps — Docker, GitHub Actions, self-hosted Linux VPS, Nginx, Coolify, Cloudflare, and Vault. Comfortable owning a product from architecture and delivery through deployment and operations. Published research in blockchain authentication and malware propagation models.
★ Profile Summary ★
Full Name Đặng Quốc Khánh
Position Senior Fullstack Engineer
Organization Armorx.ai (Remote)
Specialty Platform & Product Engineering · DevOps
Hometown Đắk Lắk, Vietnam
"Quality is honor — Progress is discipline"
Staff ID Photo Verified ✓
5+
Years of experience
7
Organizations
13
Projects completed
★ Topics: React· Next.js· NestJS· TypeScript· Docker· MongoDB· PostgreSQL· Microservices
Skills & Technologies
Frontend
TypeScriptJavascriptReactNext.jsTailwind CSSAstroSvelteSvelteKitReact RouterStorybookJestReact Testing Libraryshadcn/uiRadix UIMaterial UIJavaScriptHTMLCSSGSAPThree.js
Backend
Node.jsNestJSExpress.jsGraphQLRESTMoleculerPostgreSQLMongoDBMySQLRedisPrismaTypeORMSequelizeNATS
DevOps
DockerGitHub ActionsCloudflareNginxCoolifyLinux VPSUbuntuVaultSonarQube
Other
MicroservicesDomain-Driven DesignCQRSEvent SourcingMonorepoSEOClaude CodeGitSwaggerPostmanFigmaJira
Work Experience
Apr 2025 — Present
Cybersecurity platform providing ransomware detection, endpoint monitoring, and device management solutions for enterprise customers.
Director Application — Frontend Engineering
Cybersecurity console enabling enterprise customers to safely evaluate, monitor, and manage endpoint devices at scale — including Observer Mode and Remote Device Management capabilities.
Technologies: ReactReact RouterTypeScriptTailwindCSSStorybookJestReact Testing LibrarySonarQube
Responsibilities:
Defined and implemented a scalable feature-based architecture and Atomic Design system, creating the frontend foundation for long-term product growth. Established the frontend quality engineering foundation from scratch — automated testing infrastructure, SonarQube quality gates, and systematic refactoring — achieving 83%+ code coverage. Delivered Observer Mode and Remote Device Management capabilities. Established development standards and engineering guidelines that improved code consistency, maintainability, and review efficiency across the team.
Nov 2025 — Jun 2026
Self-led DevOps & platform engineering venture — built and operated a proxy management platform for web scraping, SEO monitoring, and ad verification workflows.
NetProxy Platform & Infrastructure — Founder · DevOps & Platform Engineering
End-to-end proxy management platform with proxy pool management, IP rotation, usage analytics, and a developer console — running on self-hosted infrastructure.
Technologies: DockerGitHub ActionsNginxCloudflareLinux VPSNext.jsNestJSGolang
Responsibilities:
Designed the deployment topology and provisioned self-hosted Linux VPS infrastructure with Nginx reverse proxies, and Cloudflare for edge caching, DNS, and DDoS protection. Built CI/CD pipelines on GitHub Actions covering automated builds, container publishing, and rollback workflows. Containerized every service with Docker, and operationalized monitoring, log aggregation, and uptime alerts. Owned product strategy, architecture, development, and growth — engagement concluded Jun 2026.
Jun 2024 — Apr 2025
All-in-One Event Management System Micepad helps organizers create and manage events, drive registrations, engage attendees and measure event performance.
Event App Management — Backend/Fullstack
An application provides an intuitive interface with informative dashboards, streamlining management.
Technologies: NestJSNextJSMySQLCoolifyRuby on Rails
Responsibilities:
Define the architecture, code convention, setup SonarQube, implement unit test to coverage 80% of code. Review code, working close with Co-Founder, Backend team to implement features. Apply atomic design to Frontend team.
Jun 2023 — Jun 2024
Help to re-build the marketing web, support to implement new feature and fix bug for the platform and SaaS system.
Wareflex SAAS — Fullstack
A SaaS software system for partner and client to manage warehouse, transportation and order.
Technologies: NextJSNestJSMonorepoMongoDB
Responsibilities:
Support to implement new feature and fix bug.
Wareflex platform — Fullstack
A technology platform connecting trusted logistics providers to businesses of all sizes across Vietnam.
Technologies: NextJSNestJSMonorepoMongoDB
Responsibilities:
Handle customized solution feature (create quotation, approve, delete, send message). Manage company and user in system feature.
Marketing website — Frontend
The landing page website introduces services and product mission. Optimized by SEO and responsive for multiple devices.
Technologies: NextJSNestJSMonorepoMongoDB
Responsibilities:
Init project, implement UI from Figma, handle API, discuss with the marketing team. Admin management for Lead, Blog, Contact. Optimize website for SEO and Best practice.
Aug 2022 — Aug 2023
Grew as a developer working with the team. Learned the full art of the working process and how to become a responsible employee.
NeoX - Testing API system — Frontend
Test whether specific actions belonging to one flow are working by calling each action individually.
Technologies: ReactJSTypeScriptJavaScriptHTMLCSS
Responsibilities:
Build the UI, handle logic when the user types, validate data, format following GET, POST, PUT, DELETE action.
NeoX Payment System — Backend
Payment system that focuses on payment and embedded finance solutions. Simple integration with multiple banking systems.
Technologies: Node.jsMongoDBMicroserviceMoleculerTypeScript
Responsibilities:
Join the team to build a collection service in the microservices. Support for payment flow, push the file, and download reconciled file.
Feb 2022 — Aug 2022
Built frontend project from scratch. Config source structure, integrate to MetaMask, make transactions to retrieve BIVE tokens.
Bizverse Rentall — Backend
Booking application with NFT instead of reservation. Users book hotels and pay in cryptocurrency.
Technologies: Node.jsMySQLGraphQLSequelize
Responsibilities:
Develop API, manage server, maintain source code, payment integration, discuss solutions, send mail notifications, apply clean code.
Bizverse Claim BIVE TOKEN — Frontend
System to claim tokens via each IDO whitelist. User login via MetaMask wallet and get BIVE tokens.
Technologies: ReactJSWeb3
Responsibilities:
Build the web support for claim BIVE tokens. Integrate with MetaMask wallet.
Virtual Browser — Frontend
Custom browser to connect directly to the VR of company website for Oculus Quest users.
Technologies: C++Java
Responsibilities:
Custom Firefox open source to directly access company VR website.
Sep 2020 — Jan 2022
First company after graduation. Worked as frontend and backend. Gained experience in database design, source code building, and Ubuntu server deployment.
Station management — Frontend
Application to manage station maintenance across the country. Employees submit maintenance requests through management levels.
Technologies: ReactJSMaterial UIHTMLCSSJavaScript
Responsibilities:
Design mockup, implement UI flows, work with the client to get requirements, build React applications for each role.
Bensist - Danish Client — Backend
Building the benefit application for employees. Companies integrate with the application for employee benefits.
Technologies: MongoDBNode.jsRESTExpress.js
Responsibilities:
Design database, expose API, implement database, build project from scratch, working directly with the client.
Education & Research
Sep 2017 — May 2022
THE UNIVERSITY OF DANANG - UNIVERSITY OF SCIENCE AND TECHNOLOGY
Information Technology Engineering Degree
Major: Information Technology
Completed Information Technology Engineering Degree (2017-2022) with 3.14/4 score.
Jun 2022 — Jun 2022
Malware Spreading Model for Routers in Wi-Fi Networks — IEEE Xplore
Proposes a model describing the spreading of malware in Wi-Fi networks using an epidemiological mathematical model. Calculates basic reproduction number R0 and indicates conditions to limit spread.
Sep 2021 — Sep 2021
A Behavior-Based Malware Spreading Model for Vehicle-to-Vehicle — MDPI Electronics
Proposes SEIR-S mathematical model based on VANET network characteristics and the SIR disease-spreading model. Verified using numerical analysis and agent-based simulation on NetLogo.
Apr 2023 — Apr 2023
Research and proposal for a blockchain-driven hybrid model for IoT authentication. Shows promising results on the Ganache blockchain.
Certifications
Claude Code in Action
AnthropicIntroduction to Linux
LinkedIn LearningIdentifying and Safeguarding PII v6.0
DoD Cyber ExchangeAwards & Achievements
Recent Posts
Method of Real-Time Communication
An overview of methods for implementing real-time communication in web applications.
Scaling a System from Zero
Scaling a system from zero to millions of users requires a clear roadmap.
Implement i18n Configuration for Next.js Project
A comprehensive guide to setting up internationalization (i18n) in a Next.js project, enabling support for multiple languages and locales.
Projects
DevUtils Sidebar
A lightweight developer toolbox that lives inside the Chrome Side Panel — JSON formatter, JWT decoder, Base64, URL encoder, UUID generator, Timestamp converter, and Regex tester. No context switching, no backend, no telemetry. Built with React 19, TypeScript, Vite 6, Tailwind, and Manifest V3.
VatgiaTop
A platform providing real-time construction material prices across 34 Vietnamese provinces, sourced from provincial Departments of Construction. Features include house cost estimator, material quantity calculator, interior cost estimator, and a VLXD Price API for developers.
Mohy
Professional website design services in Buon Ma Thuot, Dak Lak. SEO-optimized, loading speed under 1 second, free lifetime hosting, 12-month warranty. Receive a quick quotation within 24 hours.
NetProxy
Build a proxy management platform. It allows users to manage and rotate proxies for various use cases such as web scraping, SEO monitoring, and ad verification. The platform provides features like proxy pool management, IP rotation, and usage analytics to ensure efficient and reliable proxy usage.
★ Get In Touch ★
Senior Fullstack Engineer with 5+ years building and shipping production software end-to-end. Experienced in platform modernization, microservice architectures, quality engineering, and DevOps — Docker, GitHub Actions, self-hosted Linux VPS, Nginx, Coolify, Cloudflare, and Vault. Comfortable owning a product from architecture and delivery through deployment and operations. Published research in blockchain authentication and malware propagation models.